Socket for incandescent electric lamps.



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Specification of Lettera Patent.

llPatenterl .1" an. S0., istinti,

application filed January 30. 1905. Serialll213,ll78.

cuse, in the rcuntyotOnondaga andjState of' New York, have invented`certain new and useful lniproveinents in'Sockets for IncandescentElectric Lamps; and l do hereby declarc the following to be a full,clean', and exact description of theinventien, such as will enableothers skilled in the art to which it appertains to make and use thesaine. i

My invention relates to sockets lor incandescent electric lamps; and itco1 'sists in a particular form of socket that is simple to construct,easy to install, and that' fully protects and insulates lthe variousinet-,allie parts. The essential feature of this ii'vention is thearrangement of the wire termilials on the sides of the insulating blocksand other changes relating thereto, which are modifica tions suitablefor certain locations of the invention of my Patent No. 719,265, datedJanuary 27, 1903.

My invention will be understood by relier ence to the drawings herewith,in which fthe reference-numerals of the speciiicatin indi-` cate thecorresponding parts in all the figures.

Figure I is a vertical section of my inven-.

tien. Figs. Il and 1H aresiniilar sections at right angles to theirecedin showing the eireuitopen in Fig. and in iig. lll the cir cuitclosed and the inclosing shell and cap removed. Fig. IV is a top lan ofFig. lll. Fig. V is an elevation or Big. III with the `lainpterminalsremoved. Figs. Vl and VII are vertical sections at ri ht angles of theinsulating-blocks; Fig. VllII is a bottoni plan of the u per block withthe metallic terminals `an contact-springs in position. Figs. IX andl Xare longitudinal sections showing Vdifierent modes of securing the brassshell to the cap to inclose the inner parts.

. land 2 indicate, respectively, the upperv and lower blocks ofporcelain or other suitable insulatino' material secured in contact byany suitab e means, as'by screws 8 8, arranged in holes 4 l te supportand protect the metallic arts in circuit. The upper block is referabll;provided with a :margin 5 and armed with the small slots il G to receivethe tips olE the securing-screws and with wire rne'tes 7 7 in its uppersurface and sides for ghe cohductingwires connected to bindingblock andarranged in recesses springs screws onwirc terminals l1 El, secureiiltempi,

These slots e may be continued. tllrnuggh lower block to a'fiordchannels ll for the screwn tips, desirable in some cases and shown inlig. V. Thclower bleek 2 has the .integral inaririn 10 and central boss12,1iorming the anniilar 6o groove in which .is secured by said screws 3the outer lamp-terminal 1st, clam ing inplace the liber sleeve 15. Thelower b oclr'has also the recess 16 for the central lamp-tern1inal lil`and marginal recesses 19 19 for the ends oi 65 the wire terminals 9,which act as guides in the assembling; of the parts and maintaining themin position. These blocks have corresponding recesses in their adjacentfaces to forni the sparlring-chamber arranged the cani 23, of porcelainor other insulating natte-rial, on spindle 24, journalcd 1n -grooves 25and provided with external thuinb-pieee 2G, by which the,contactextending' into apertures 29, are 75 forced into engagement,respectively, with vcentral terminal 18 and` with tongue 3l on outerterminal 14, whereby the contact is made in both legs of the circuit oris breken by turningr the cam to permit the springs to '8.o

contract. Square shot ders 3() are desirably formed iii-recesses 8 inthe upper' block to receive the ends of the contact-springs and theterminals 9, so that the springs are electrically connected to therespective terminals and both secured. in position on each side by thesingle screw 32.'

33 is the usual brass shell; 34, the fiber lining thereto,'-3G,the brasscap secured to the grooves 25 and provided with eirternal thu 9o shellby screws 37 or other suitable means and inclosing the Vliber cap 38,secured in position by being sprung over lugs 39, inwardly extending inthe interior ol the cap, or 'by othe si z itablr: ineens. 'l

ln the socliet of my said patent the wire terminals are arranged on theupper surface of the upper block Within the'margin, which inade itinconvenient in sonic situations to connect the wires, as there wasnotenough me.

'finger-room. lu my present device these terminals are convenientlyarranged on' the:

sides ol the porcelain block, so that the brass:

cap may iirst be secured in position on #the tiiirture, the wires drawnthrouvh lain body, and operative parts tkhen set m pcl therein, 5

22, in which is 7o the porcel i 0 5 il t Y sition andthe wiresconveniently connected to thc binding-serons Finally, the brass shell is.set in position and seein-ed to -ap by attach inem-screws or otherwise.

ln lfig. .iX is shown a means lor securing the rap to the shell,consisting o!E small busl1- ings or evelets 5U, secured in cap 3o andthreev .ded for screws 37,. which pass lrcelv through holes in edge oishell made large enough to receive them and enter slots o in porcelain`hfhell is grooved at :3i to pass over evelct.

ln Fig. X there is no cvelet, but the metal of the cap is inwardly upsetat' :35% to give slightly-elongated threaded hearings l'or the screwAThe holes in the grooved portions ol' the shell are large enough l'orthc screws to pass freely, with their tips extending into holes :34 inthe upper block, .so that by means ol the screws there is a moreVpositive securing o" the body of the socket within the case than wherethe screws entered slots like (j.

Having thus described my invention, what l claim as new, and desire tosecure by Letters Patent, is-

l. ln an incandesrfentdamp socket, the combination with the basecomposed ot two porcelain blocks having cavities on their adjacentsurfaces, forming a vcrtic.allv-elon gated sparling-chamber incloscdwithin the base, and having apertures lier the connccting-screws, oflamp-terxninals arranged on the lower surface of the lower block,`elongated contact-springs arranged in the arcing chamber havingupwaidly-extending bends and downwardly-externiing tips extending intoapertures adjacent to the integral contact-pieces, wire terminalssecured in recesses on the upper block and exten(iingintoreccsses on thelower block, means lor seciuing the wires to the wirel terminals and forconnecting the wire terminals to the respective springs, a rotatingshaft iournalcd between the blocks, a porcelain cam arranged between thesprings and loosely mounted on said shalt to be turned thereby, aninclosing case for the base coniposed of a cap and shell, in-"ulating-linings for the cap and shell, and means to connect tllc cap`to the shell, seeureljY to inclose the base 2. ,in :m incamlcsccnt-lampsocket, the combination with a base composed ol upper and lowerporcelain blrwlts having corrosponding cavities on. their juxtaposedsnrli'accs, forming an airing'chambery and with apertures l'or the.securing-screws, thc upper block being lornicdlwith sidev recesses,shoulders in said recesses and. wire grooves in its top and sidescomInnnicating with the rrccsscs, and both blocks l'orlnod on theirouter snrl'arcs with registering, longitudinal channels having enlargedscrew-slots nl their nppcr ends, oiE lamp-1erminzds secured on the lowersilrlncc ol' the lower bloeit, wire termilating material arrangedbetween the contact-springs and loosely mounted on the shalt to beturned thereby.

3. in an electric socket the combination.

with a brass ca havin(T in its marifin inwardl upset portions providedwith threaded bearings, ol screws 'fitted to said bearings, a brassshell fitting within the cap margin and provided with inwardly-groovedportions to lit over the hearings and with holes in the grooved4portions lreelv to receive the screws, and of insulating portionsarranjed within the cap and shell and provided wit i, holes adiacent totheir upper margin to receive the screw-ti ps.

4. An inclosing shell for a device of the character described, having incombination a metallic cap having marginal portionsinwardly upset andthreaded, ot screws fitted thereto, and a metallic shell fitting withinthe cap and having marginal holes to receive the screw ends.

5. in an incamlcscent-lamp socket, the combination with base composed oftwo )orcclain blocks, of lamp-terminals on the lower block, wireterminals on the upper block, secured in opposite recesses on' the sidesthereof and having their tips extending down-into registering recesses,on the lower hlcmk, means to secure the blocks together, a brass capand a. brass shell to in'elose the base, screws to secure the cap to theshell, both blocks havin- 1' on their side faces registeringlongitudinal channels to receive said screw-tips.

G. in an incandescent-lamp socket, the combination with a base composedof two porcelain blocks, of lamp-terminals on the lower block, wireterminals on the upper block,. connections between vthe respectivelamp-terminals and the respective Wire terminals, means to secure theblocks together, a metallic cap and a metallic shell toinclose thebasc,and. screws to secure the cap to the shell, both blocks having on theirouter edges, registering, longitudinal channels having enlargedscrew-slots at their upper ends to receive the tips ol' said screws. v

Ein testimony whereof I affix my Signature in presence oll twowitnesses.

' ALBERT P. SEYMOUR.

\Vi1ncssns:

t. J. linnnr.

IOO

IIO

